Here’s the data (sorted) of the ages of 91 women who won the Oscar for the best actress in a leading role: what’s the interquartile range

There are a total sales of 2,000 dollars on monday on tuesday sales dropped 10% on wednesday sales dropped another 20% compared with tuesday from wednesday to thursday sales increases by an equal amount to 25% of monday total sales what is the net change in dollars on total sales from monday to tuesday